Question

I want answers of Q5​

Answer 1

Answer:

5886

Step-by-step explanation:

$(7a - 5b)^{3} = 343a^{3} - 125b^{3} - 3*7a*5b*(7a - 5b)$

$216 = 343a^{3} - 125b^{3} - 630ab$

$216 = 343a^{3} - 125b^{3} - 5670$

$5886 = 343a^{3} - 125b^{3}$

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Answer 2

Answer:

5886

Step-by-step explanation:

see the calculation